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【单选题】
光合作用中释放的氧来源于A.
H2O
B.
CO2
C.
RuBP
D.
H2O和 CO 2
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反馈参考答案：
举一反三
【简答题】将进货单价为40元的商品按50元出售时，能卖500个，已知该商品每涨价1元，其销售量就要减少10个，为了赚8000元利润，应涨价多少元？
【单选题】将进货单价为40元的商品按50元售出时，就能卖出500个，已知这个商品每个涨价1元，其销售量就减少10个．当定价为（ ）元时，可获得最大利润．
A.
85元
B.
70元
C.
105元
D.
115元
【简答题】将进货单价为40元的商品按50元出售时，能卖500个．已知该商品每涨价1元，其销售量就要减少10个，为了赚8000元利润，应涨价多少元？
【单选题】A bank informs the beneficiary that another bank has opened a letter of credit in his favor. The bank informing the beneficiary doses not add its engagement. This bank is acting as ________.
A.
an advising bank
B.
a confirming bank
C.
an issuing bank
D.
profitable
【单选题】Pasion, a slave worked for two leading Athenian bands, later opened a bank of his own.
A.
Y
B.
N
C.
NG
【简答题】将进货单价为40元的商品按50元售出时，就能卖出500个．已知这种商品每个涨价1元，其销售量就减少10个．为了赚得8000元的利润，每个商品售价应定为多少元？这时应进货多少个？
【单选题】How long will it take the man to get the bank card?
A.
Two weeks after he opened the account.
B.
At least one week after he opened the account.
C.
Less than a week after he opened the account.
D.
Immediately after he opened the account.
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